/Engine/Source/Editor/DetailCustomizations/Public/Customizations/MathStructCustomizations.h
Gets the value as a float for the provided property handle
The value or unset if it could not be accessed
template<typename NumericType> [TOptional](API\Runtime\Core\IO\TOptional)< NumericType > OnGetValue ( [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [IPropertyHandle](API\Editor\PropertyEditor\IPropertyHandle) > WeakHandlePtr ) const